Window or door screen



(No Model.)

J. A; STENBN. WINDOW OR DOOR SCREEN.'

Patented May/1, 1897.

. ,fig-4. au A 15 l ATTUHNEYS.

T Houma PETERS on.. morou'mafwumnrorl n c JOHN A; STENEN, OFIIILLSBOROUGH, NORTH DAKOTA.

WiNDOW OR DOOR SCREEN.

SPECIFICATION forming part of Letters Patent No. 582,105, dated May 4,1897.

i Application filed June 4, 1896. Serial No. 594,300. (No model.)

To @ZZ whom, t may concern.-

Be it known that I, JOHN A. STENEN, of Hillsborough, in the county ofTraill and State of North Dakota, have invented new and usefulImprovements in Vindow or Door Screens, ofwhich the following is a full,clear, and exact description.

This invention relates to screens designed to be placed in door orwindow casin gs to prevent the entrance of insects-such as flies,

mosquitoes, and the like; and the object is principally to provide ameans for the escape of insects from the interior of a room to the outeratmosphere.

It is well known that the habit of insects, and particularly flies, isto go upward-that is, a fiy on a screen that may be in a window willgenerally move upward on the screen, and if the outer air be moreagreeable than that inside a room the fly will naturally seek for anescape. My invention, therefore, is particularly adapted to takeadvantage of this habit of the flies, and therefore I provide openingsthrough which the flies may readily pass outward, but so constructedthat the flies cannot easily pass inward or into a room.

I will describe a window and door screen embodying my invention and thenpoint out the novel features in the appended claims.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar characters of reference indicatecorresponding parts in all the views.

Figure 1 is an outside elevation of a screen embodying my invention.Fig. 2 is a section through the line 2 2 of Fig. 1. Fig. 3 is a sectionthrough the line 3 3 of Fig. 1, and Fig. 4 is a vertical section showinga modification.

Referring to the drawings, 1 designates a frame designed to iit within awindow or door casing outside of the window or door, and on this frame 1is secured a wire or similar net ting 2 of suitable mesh. As here shown,the frame is divided into two parts by means of a transverse central bar3. This central bar is provided with a series of openin gs 4, whichprovide communication from the inner side of a room to the outeratmosphere. The

outer portions of these openings 4 are quit-e small or contracted, butas they extend inward the walls diverge or incline, as indicated in thedrawings, thus making the openings at the side within the room quitelarge. I have here shown the upper transverse bar 5 as provided with aseries of similar openings G.

As a means for regulating the outer openings orto entirely close thesame I employ trapplates 7 and 8, adapted to close over said openings.The trap-plate 7 has journal-bearings in eyes or lugs attached to thebar 3 or, as shown, to a supplemental barplaced on the outer sidethereof, and the trap-plate 8 has journal-bearings in eyes or lugssecured to the outer side of the transverse bar 5 or to a supplementalbar secured on the outer side thereof. The journals of the plates 7 andS at one end have a crank portion 9, and these crank portions areconnected by a link 10, which has pivotally connected to it an arm 1l,extended through a transverse opening in one of the side rails of theframe l and piv oted therein. An operating-rod 12 has pivotal connectionat its upper end with the inner end of the arm 11, and the body portionof this operating-rod 12 extends down to keepers 13, secured to theinner side of the frame. By moving this operating-rod 12 upward the arm1l will be rocked on its pivot in a direction to move the link 10downward, and this downward movement of the link 10 will throw thetrap-plates 7 and 8 to au open position, as indicated in full lines inFig. 2. Of course these plates may be moved more or less open toregulate the openings 4 and 6, or they may be entirely closed upon saidopenn ings by an extreme downward movement of the operating-rod.

In the modification shown in Fig. 4 I dispense with the operating meansabove described or with the cranks 9, and in lieu thereof I employ acurved rod 14, which' passes through a transverse opening in the upperportion of the frame 1 and connects pivotally at its outer end with anarm 15, extended outward from the center of the trapplate S. A similarcurved bar 1G extends through the screen material 2 below the bar 3 andengages at its outer end with an arm 17, extended outward from thecenter of the trapplate 7.

It will be observed that the ends of the bar 14 curve downward and thatthe ends of IOO the bar 16 curve upward. The outer ends of therespective bars are connected by a link 1S, which may be of wire, andthe inner ends of said bars are connected by a Wire or cord 19. Bydrawing upward on the wire or cord 19 the rods 14; and 16 will be movedlongitudinally and cause the trap-plates 7 and 8 to move to an openposition. By drawing said wire or cord 19 downward the said rods 14 and16 will be moved longitudinally in the opposite direction, andconsequently move the trapplates 7 and S to a closed position. It isobvious that as the trap-plates lie in a hori- Zontal plane when closedthey will retain such closed position by their own weight, so that theoperating-rods needv not be fastened.

I have described and shown two bars provided with exits for insects; butitis to be understood that I do not limit my invention to any particularnumber of bars, as it is obvious that a single one, particularly at theupper portion of the frame, will answer the requirements, and, further,a greater or less number of exit-openings may be provided in a singlebar without departing from the spirit of my invention. It is alsoobvious that my invention may be applied to other than screenclosedopenings, that the shutters may be operated jointly or separately, thatthey may be operated with weights or springs, and that the outlets forinsects may be differently shaped.

Having thus described my invention, I

claim as new and desire to secure by Letters Patent#- 1. A window ordoor closure, comprising a frame, a covering material secured thereto,atransverse bar on said frame having upward and outward openings, theouter portions of said openings being restricted, a trap-plate mountedto swing on the outer side of the frame and adapted to extendtransversely in a horizontal plane when closing said opening, a bar orrod extended through the frame, and a connection between the said bar orrod and trap-plate, substantially as specified.

2. A window or door screen, comprising a frame, a screen materialthereon, an intermediate transverse bar having upward and outwardexit-openings, a top transverse bar having upward and outwardexit-openings, a trap-plate for the openings of the intermediatetransverse bar, a trap-plate for the openings of the top transverse bar,cranks on the spindles or journals of said plates, a link connectionbetween the cranks, an arm extended through the screen-frame and pivotedtherein and having pivotal connection with the link, and anoperating-bar having pivotal connection with the inner end of said arm,substantially as specified.

JOHN A, sTENEN Vitnesses:

P. L. BEWIG, M. H. HAGEN.

